Registration is free but required in order to participate in the luncheon and tutorial session.
Please Email to email@example.com and include the following information in the email;
1. Name, institution, contact email
2. Will you attend the tutorial? (Yes or No)
3. Will you attend the luncheon? (Yes or No) If yes, any food restrictions?
4. Are you interest in giving presentation? If yes, which do you prefer, oral or poster?
Please also attach a short 150 word abstract and title.
Dr. Yeshayahu Talmon
Recent developments in high-resolution scanning electron microscopy (HR-SEM) have made it an ideal tool for the study of nanoparticles and collids in viscous systems or in systems containing large objects, hundreds of nanometers and larger, in which small (nanometric) features are to be imaged, e.g., hydrogels or body cells. Such system cannot be studied by cryo- TEM. Liquid nanostructured systems can now be studied by cryogenic-temperature scanning electron microscopy (cryo-SEM), using much-improved cryogenic specimen holders and transfer systems, even without conductive coating. In recent years we have developed a novel specimen preparation methodology for cryo-SEM specimens that preserve the original nanostructure of labile complex liquids at specified composition and temperature, quite similarly to what has been done in cryo-TEM.
In my talk I will describe briefly the principles and the state-of-the-technology of cryo-SEM, and, through examples of our recent work, will demonstrate various variants of the methodology that allow us to study a wide range of soft matter systems, taking advantage also of the combination of cryo-TEM, cryo-SEM, and non-imaging, e.g., scattering techniques.
Dr. Matthew R. Libera
Dr. Kedar Narayan
Dr. Lena F. Kourkoutis
Interfaces and surfaces play a special role in synthesizing novel materials, enabling chemical reactions, and designing electronic devices. While much progress has been made in the study of free surfaces, less is known about internal interfaces scanning transmission electron microscopy (STEM) has proven to be a powerful technique which now offers real space interface napping of structure, composition and bonding at atomic resolution. Despite the progress of electron microscopy (EM) in the last decade, many systems still lack high-resolution characterization because of their incompatibility with imaging condition typically used in materials EM. Many solid/liquid interfaces in particular have yet to be imaged at high spatial resolution but play a critical role in chemical, physical and biological process including catalysis and electrochemical energy storage.
Here, we will discuss a new approach of using cryo-focused ion beam (FIB) and cryo-STEM to understand processes at solid/liquid interfaces. Inspired by EM of biological systems, these complex interfaces are stabilized by rapid freezing which enables structural and spectroscopic studies by cryo-STEM. To gain access to internal interfaces of samples and devices too thick to image directly, we have developed cryo-focused ion beam lift-out to prepare thin lamellas for subsequent analysis of internal solid/loquid interfaces at the nanometer to atomic scale. Examples will highlight applications of cryo-FIB in a range of fields including materials synthesis, electrochemical energy storage and cell biology.